Holder for chain saw sharpeners



Jan. 4, 1949.

'R. s. cARRoL HOLDER FOR CHAIN SAW SHARPENERS Filed Jan. 27, 1947 A 77`0/9/VEY Patented Jan. 4, 1949 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates generally to power saws of the chain type and particularly to a means for sharpening same on the conventional type of Sharpener for circular saws.

The main object of this invention is to provide a holder by means of which the chain of a power saw may be securely and accurately held in position for grinding on the conventional form of hand saw Sharpener designed for sharpening circular saws.

The second object is to provide a holder for saw chains which is easily mountable on the aforesaid sharpening machine without in any way altering the machine or detracting from its usefulness.

The third object is to construct a holder of the class described whereby precision grinding can be performed at a minimum expense.

I accomplish these and other objects in a many ner set forth in the following specification as illustrated in the accompanying drawing, in which:

Fig. l is a perspective view of a common form of Sharpener for circular saws, showing my device in position.

Fig. 2 is a fragmentary plan view taken along the line 2--2 in Fig. 1.

Fig. 3 is a fragmentary view of a saw chain and the stop. i

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawing, there is shown in Fig. 1 a common form of sharpening machine for circular saws including a base I upon which is mounted a vertical standard II upon the upper end of which ls disposed a grinder head I2 whose abrasive wheel I3 is driven by a belt I 4 from a motor confined within the head I 2. The head I 2 is manually controlled by means of a handle I5. On the base I0 is also mounted a turret I6 having a slotted head I 'I mounted thereon whose elevation is controlled by the screw I8 which is rotated by ya crank I9 mounted on the turret I6. It will be understood that the turret I6 and the head I1 are revolvable on a verticle axis.

Such machines are Vnow in common use and the specific details require no further explanation here.

Turning to Fig. 2, there will be seen a pair of disks 20 and `2 I, the former of which has a hole 22 formed therein to receive the tapered collar 23 which is spaced from the head I 1 by the sleeve 24 and secured thereto by the bolt 25 which passes through the slot 26 in the head I'I.

The disk 2I is secured to the disk 20 by the rivets 21 which are near the bolt 25 While 4bolts 28 pass through both of the disks 20 and 2l near er the outer edge thereof. The purpose of this construction is to make it possible to use the disks 20 and 2| as a sprocket wheel between the sides of which may be held the lugs 29 of the block links 30 while the side links 3l ride on the outermost rims 32 of the disks 20 and 2l.

In order to enable the operator to set his 5 grinding Wheel i3 at the desired angle with relation to the grinding faces 3l' of the teeth 38, the quadrant 39 provided The operation of the When it is desired to sharpen the chain of a power saw, it is merely placed sharpened in the same manner that an ordinary circular saw would existing machine first dehead I2 is provided with a with a clamping screw 40. device is as follows.

around the disks 20 and 2l' and be sharpened on the scribed.

15 I have also provided an adjustable stop 4I 42 which is hinged which is supported by a screw on a pin 43 on the bracket 44.

While I have thus illustrated and described my invention, it is not my desire to be limited to the precise form shown herein, and I intend to cover such forms and modifications of the invention as fall fairly within the appended claim.

I claim:

A saw holding device, having in combination of dished disks having their outer rims spaced and having their central portions united and provided with a cenfitting into said opening, a head forming a support for said holdcollar and head, disks surrounda bolt forming the pivot for said collar and attaching same to the spacing of the rims of said disks and means for indexing a sheave, consisting of a pair tral opening, a tapering collar er, a bolt passing through said a sleeve between said head and ing the small end of said collar,

said head, means for controlling the chain on the holder.

RALEIGH S. CARROLL.

REFERENCES CITED le of this patent:

UNITED STATES PATENTS Name Holland McClellan Brown Larsson Number Date FOREIGN PATENTS Date The following references are of record in the May 3, 1904 Feb. 27, 1906 Aug. 18, 1908 Dec. 2, 1930 Kirchner Jan. 23, 19134 1940 1940 1943 1946 1947 Johnson Feb. 4, 1947 Great Britain sept. 25, 191s 

